The Cabin in the Woods: parents' guide

Bloody throughout: zombies attack with a bear trap, saws and knives, heads are severed and throats stabbed. Late in the film dozens of monsters maul and eat people in a prolonged massacre, with shootings, and a staff member shoots herself.

Frequent strong language: one count found nearly 60 f-words and close to 10 s-words, plus an anti-gay slur, other crude terms, and about 20 misuses of God's name and a few of Jesus'.

A young woman is shown topless as she and her boyfriend begin having sex in the woods before an attack, while unseen workers watch. Another woman undresses to her underwear, men are shirtless, and there are sex jokes.

One student smokes marijuana almost nonstop, including from a collapsible bong and while driving; friends drink beer, and the group is secretly drugged. Adults in a control room drink tequila and beer at a party.

Sustained terror: zombies breaking into the cabin, a dark cellar full of creepy relics, a diary read aloud describing horrors, and a final act packed with nightmarish monsters, including a fleeting image of a suicide.